Supertonic 3 is Supertone's TTS model built around fast generation speed and a cost-efficient structure. With this update, the number of supported languages has grown significantly, sentence-reading stability has been improved, and Supertonic 3 is now available in both Play and the API.
There are three key highlights in this release of Supertonic 3.
Beyond English, Korean, and Japanese, Supertonic 3 supports a wide range of languages including German, French, Spanish, Arabic, Hindi, and Vietnamese. You can now produce more global content with a single model.
Issues such as dropped words, repeated phrases, and unstable rhythm — which occasionally occurred with certain short sentences or expressions in the previous Supertonic — have been reduced. You can expect more stable results for content where short, clear sentences matter, such as subtitle-driven narration, short-form video dialogue, and in-app voice guidance.
Supertonic 3 is designed for workflows where fast response time and low cost matter most. It's a great fit for production environments that involve generating large volumes of narration or repeatedly creating multilingual versions of content.
Supertonic 3 supports a total of 31 languages.
English / Korean / Japanese / Arabic / Bulgarian / Czech / Danish / German / Greek / Spanish / Estonian / Finnish / French / Hindi / Croatian / Hungarian / Indonesian / Italian / Lithuanian / Latvian / Dutch / Polish / Portuguese / Romanian / Russian / Slovak / Slovenian / Swedish / Turkish / Ukrainian / Vietnamese
It can be used more flexibly for projects that require multiple languages, such as multilingual short-form videos, global educational content, in-app voice guidance, and accessibility content.
In content production, reading stability is just as important as how natural the voice sounds. When words are dropped or sentences are repeated, the output is hard to use as-is.
Supertonic 3 has been improved to reduce the dropped words, repeated phrases, and unstable generation of short sentences that occasionally appeared in the previous version.
You can expect especially stable results in content where even small errors within a single sentence are easy to notice — such as short instructional sentences, short-form video dialogue, and subtitle-based narration.
Supertone offers TTS models built for different purposes.
Sona 2 is a model that excels at high expressiveness and natural emotional delivery. It's a great fit for content where subtle intonation, performance, and emotional nuance matter.
Supertonic 3, on the other hand, is a model designed for fast generation speed and high efficiency. It's well suited for cases where you need to produce large volumes of speech quickly, or where you want stable TTS quality at a lower cost.
For the same number of credits, Supertonic 3 can generate twice as much speech as Sona 2.
If expressiveness matters most, choose Sona 2. If fast generation and cost efficiency matter most, choose Supertonic 3.
Supertonic 3 is offered through Play's subscription plans so you can use it with less friction.
On the Starter plan, you can try Supertonic during your first month.On the Creator plan, you can use credits twice as efficiently compared to Sona.
On the Pro plan, you can generate Supertonic 3 audio without limits in the Desktop app.
It's especially useful for users who do a lot of repeated generation — like long-form video narration, large-scale short-form video production, educational content, and multilingual voice work.
Supertonic 3 is available in both Supertone Play and the Supertone API.
In Play, you can create audio directly from the web and desktop apps without any development work. Enter your script, pick the voice you want, and generate the result quickly for your content production.
With the API, you can integrate Supertonic 3's TTS capabilities directly into your own service or product. It's well suited for services that need fast response times and a stable cost structure — like multilingual voice guidance, educational apps, accessibility features, and automated content generation.
Supertonic 3 is Supertone's lightweight, high-efficiency TTS model — built around more languages, more stable reading quality, and faster generation.
If Sona 2 is the model that shines in rich expressiveness and emotional delivery, Supertonic 3 is the choice for fast, efficient multilingual voice generation.
If you want to create global content faster, If you want to generate large amounts of speech more efficiently, now is the time to try Supertonic 3.
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